First BLOPS's multiplayer ran like garbage that was on fire on my computer (and on a lot of other people's computers as well) and there was never a fix for it at least I didn't find one when I still cared about it. Basically what would happen was that I'd load the second multiplayer map during my game session and it would just not load and then eventually I had to force the game to quit. Multiplayer performance was pretty poor in general with hitches and weird and constant serious FPS drops even though the singleplayer ran fine and my computer exceeded the requirements easily.
So how's BLOPS 2, is the garbage still on fire? What about the server browser? Is there one or is it matchmaking and if there is no matchmaking is the server system like in BLOPS where you had to buy a server from certain sellers and you couldn't put up your own box?